tRANSFERING OUTLOOK MAIL

I will now be getting my imac on Friday so on my PC I use outlook any suggestions on how to transfer my mail from my Outlook 2003 to to Mac I will be using MS Entorage or what ever the Mac outlook version is.
The reason I ask is I am sure i done it before but it was a drawn out process, anyone know of any tools etc.

I downloaded thunderbird for the PC then imported my outlook messages and contacts.

I then went to the mail folder located doc and settings profile name - application data - thunderbird-profiles then added the file extention to the files to .mbox then apparantly you can then drag these onto entorage in the mac and then this will import it into entorage